Bybit Breach: What Happened and How to Secure Your Crypto Assets

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Recently, Bybit experienced a significant security breach, resulting in the loss of approximately $1.4 billion worth of ETH-related tokens. This incident has raised concerns about the safety of crypto assets.

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Practice Verified Codes and Commands:

1. Check Wallet Address Activity:

curl -X GET "https://api.etherscan.io/api?module=account&action=txlist&address=0xYourWalletAddress&startblock=0&endblock=99999999&sort=asc&apikey=YourApiKeyToken"

2. Monitor Smart Contract Interactions:

truffle console --network mainnet

<blockquote>
  let contract = await MyContract.deployed()
  contract.someFunction.call()

3. Secure Your Private Keys:

gpg --gen-key
gpg --output private.key --armor --export-secret-key YourKeyID

4. Check for Malicious Transactions:

tcpdump -i eth0 -n -s 0 -w capture.pcap

5. Verify Smart Contract Code:

solc --bin --abi -o outputDirectory YourContract.sol

What Undercode Say:

The Bybit breach underscores the critical importance of robust security measures in the cryptocurrency space. Here are some key takeaways and additional commands to enhance your security posture:

1. Regularly Monitor Your Wallet Activity:

watch -n 60 "curl -X GET 'https://api.etherscan.io/api?module=account&action=txlist&address=0xYourWalletAddress&startblock=0&endblock=99999999&sort=asc&apikey=YourApiKeyToken'"

2. Use Hardware Wallets:

sudo apt-get install ledger-live

3. Enable Two-Factor Authentication (2FA):

google-authenticator

4. Audit Smart Contracts:

slither YourContract.sol

5. Encrypt Sensitive Data:

openssl enc -aes-256-cbc -salt -in sensitive.txt -out encrypted.txt

6. Backup Your Wallet:

tar -czvf wallet_backup.tar.gz ~/.ethereum/keystore/

7. Check for Open Ports:

nmap -sT -O localhost

8. Update Your System Regularly:

sudo apt-get update && sudo apt-get upgrade -y

9. Use a VPN for Secure Connections:

sudo openvpn --config yourconfig.ovpn

10. Monitor Network Traffic:

iftop

11. Check for Suspicious Processes:

ps aux | grep suspicious_process

12. Secure Your SSH Access:

sudo nano /etc/ssh/sshd_config

<h1>Change Port 22 to a non-standard port</h1>

<h1>Disable root login</h1>

PermitRootLogin no

13. Use Firewalls:

sudo ufw enable
sudo ufw allow 22/tcp

14. Regularly Backup Your Data:

rsync -av --progress /path/to/source /path/to/destination

15. Check for Vulnerabilities:

lynis audit system

16. Use Intrusion Detection Systems:

sudo apt-get install fail2ban

17. Monitor Logs:

tail -f /var/log/syslog

18. Secure Your DNS:

sudo nano /etc/resolv.conf

<h1>Add secure DNS servers</h1>

nameserver 1.1.1.1
nameserver 8.8.8.8

19. Use Encrypted Communication:

sudo apt-get install openssh-server

20. Regularly Test Your Security:

sudo apt-get install nikto
nikto -h yourdomain.com

By implementing these practices and commands, you can significantly reduce the risk of falling victim to similar attacks. Always stay vigilant and keep your systems updated to protect your digital assets.

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References:

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